HW. The Special Senses Comparison of General and Special Senses A. The Special Senses are smell (olfaction), taste (gustation), vision, hearing (audition), and vestibular sensation. 1. Special sensory neurons detect light, chemicals, and sounds present in the environment and convert or transduce these stimuli into electrical signals. 2. Describe transduction. B. Summarize how special and general senses differ: 1. 2. Anatomy and Physiology of Smell A. Structures of Olfaction: the olfactory system allows for the detection of odorants, or chemicals in air, and transduces them into signals perceived as odors 1. Olfaction (sense of smell) is initiated at the olfactory epithelium, which is a small region of specialized cells found in the superior nasal cavity that contains the following three cell types: neurons, cells, and cells. 2. The following features are associated with the olfactory epithelium and its surrounding anatomical structures: olfactory nerve (CN I), olfactory bulb, and olfactory tract. B. Physiology of Olfaction: odorants in inhaled air are detected by olfactory neurons; chemical stimuli are transduced to electrical signals, which are then transmitted to various region of the brain for identification.

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Dissection

Dissection is the process of cutting up the tissue of a dead or live animal or plant, to do anatomical studies and surgical treatments. The purpose of dissection is to learn more about the overall structure of organs and organ systems and thereby understand the physiology of the organism.